SEALING STRUCTURE OF FUEL BATTERY CELL

• Main Authors: KURANO YOSHIHIRO, KOGA SHOTARO
• Format: Patent
• Language: English
• Published: 27.04.2006
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide a sealing structure of a fuel battery cell capable of down-sizing and weight reduction of the stack by thinning the fuel battery cell. SOLUTION: This is the sealing structure for tightly sealing a passage 4 formed between a membrane electrode assembly 1 and separators 2, 2 on both sides in thickness direction. An elastic body 3 which is arranged between respective separators 2, 2 so as to surround a passage forming region A is installed at the membrane electrode assembly 1 and a projection 22a which is pressure contacted to the elastic body 3 extending so as to surround the passage forming region A is formed at each separator 2. Since an excellent sealing performance is obtained at the surface pressure maximum part by the pressure contact of the projection 22a to the elastic body 3, formation of a seal lip is not necessary for the elastic body 3 and thinning of the fuel battery cell is possible. COPYRIGHT: (C)2006,JPO&NCIPI